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Entry  Mon Aug 6 20:41:10 2018, aaron, Update, DAQ, New DAC for the OMC OMCDACmdl.png
    Reply  Mon Aug 13 20:21:10 2018, aaron, Update, OMC, New DAC for the OMC c1omcSCREENSHOT.png
    Reply  Wed Nov 14 18:58:35 2018, aaron, Update, DAQ, New DAC for the OMC 6D079592-1350-4099-864B-1F61539A623F.jpeg5868D030-0B97-43A1-BF70-B6A7F4569DFA.jpeg
Message ID: 14141     Entry time: Mon Aug 6 20:41:10 2018     Reply to this: 14159   14295
Author: aaron 
Type: Update 
Category: DAQ 
Subject: New DAC for the OMC 

Gautam and I tested out the DAC that he installed in the latter half of last week. We confirmed that at least one of the channels is can successfully drive a sine wave (ch10, 1-indexed). We had to measure the output directly on the SCSI connector (breakout in the FE hard drive cabinet along the Y arm), since the SCSI breakout box (D080303) seems not to be working (wiring diagram in Gautam's elog from his SURF years).

I added some DAC channels to our c1omc model:
PZT1_PIT
PZT1_YAW
PZT2_PIT
PZT2_YAQ
 
And determined that when we go to use the ADC, we will initially want the following channels (even these are probably unnecessary for the very first scans):
TRANS_PD1
TRANS_PD2
REFL_PD
DVMDC (drive voltage monitor, DC level)
DVMAC ("", AC level, only needed if we dither the length)
 
I attach a screenshot of the model, and a picture of where the whitening/dewhitening boards should go in the rack.
Attachment 1: OMCDACmdl.png  45 kB  Uploaded Mon Aug 6 21:50:18 2018  | Hide | Hide all
OMCDACmdl.png
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